首页> 外国专利> ALTERNATIVE PROCESS FOR PROCESSING BOVINE HIDES WITH REDUCED ECOLOGICAL IMPACT AND POSSIBILITIES OF RANGE DIVERSIFICATION

ALTERNATIVE PROCESS FOR PROCESSING BOVINE HIDES WITH REDUCED ECOLOGICAL IMPACT AND POSSIBILITIES OF RANGE DIVERSIFICATION

机译:具有减小的生态影响和范围多样化的可能性的牛皮革加工的替代方法

摘要

The invention relates to a process for processing bovine hides used for making leather goods and footwear articles. According to the invention, the process consists in that the bovine hides preserved by salting are washed with soda ash up to a pH value of 9.5...10, afterwards there follows lime bathing, decalcification up to a pH value of 8...8.5, water pickling at a temperature of 22...25°C, wherein there is added a mixture of sodium chloride, formic acid and sulphuric acid, afterwards they are subjected to a pre-tanning operation with up to 3% basic chrome sulphate and base-treating in the presence of magnesium oxide, followed by treating the hides with water at a temperature of 30°C in the presence of a mixture consisting of formic acid, sodium formate and vegetal tanning extract, the hides thus treated are subjected to wet finishing in water at a temperature of 60...65°C, in the presence of a mixture of lubricating and emulsifying agents, are treated with vegetal tanning agents up to a pH value of 4.1...4.3, and afterwards are conditioned, wherefrom there result products having a content of volatile substances of 14...18% and a shrinkage temperature of minimum 70°C.
机译:本发明涉及一种用于制造皮革制品和鞋类制品的牛皮的加工方法。根据本发明,该方法包括用盐分洗涤通过盐腌制保存的牛皮,直至pH值达到9.5 ... 10,然后进行石灰浴,脱钙直至pH值达到8 ... 8.5,在22 ... 25°C的温度下进行水酸洗,在其中添加氯化钠,甲酸和硫酸的混合物,然后对其进行预鞣制,使用最高达3%的碱性硫酸铬然后在氧化镁存在下进行碱处理,然后在由甲酸,甲酸钠和植物鞣制提取物组成的混合物存在下,在30℃的温度下用水处理生皮,对经过如此处理的生皮进行处理。在润滑剂和乳化剂混合物存在下于60 ... 65°C的温度下于水中进行湿整理,然后用植物鞣剂处理至pH值达到4.1 ... 4.3,然后进行调理,由此得出的产品的挥发物含量为瓷砖含量为14 ... 18%,收缩温度至少为70°C。

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